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INVESTMENTS - Homeinns and BTG (Details) - CNY (¥) ¥ in Millions, shares in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2016
INVESTMENTS |  |  |
Carrying value under equity investments | ¥ 32,049 | ¥ 28,494 |
BTG |  |  |
INVESTMENTS |  |  |
Equity method investment, ownership interest (as a percent) |  |  | 22.00%
Carrying value under equity investments | ¥ 2,500 | ¥ 2,600 |
Sale of shares number of shares issued | 4 | 9 |
Proceeds from issuance or sale of equity | ¥ 101 | ¥ 201 |
Sale of Stock, Percentage of Ownership after Transaction | 12.31% |  |
BTG | Other Income Expenses |  |  |
INVESTMENTS |  |  |
Gain loss from sale of stock at open market value | ¥ 20 | ¥ 41 |

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